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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "http2/http2_structures.h"
// Tests are focused on Http2FrameHeader because it has by far the most
// methods of any of the structures.
// Note that EXPECT.*DEATH tests are slow (a fork is probably involved).
// And in case you're wondering, yes, these are ridiculously thorough tests,
// but believe it or not, I've found stupid bugs this way.
#include <memory>
#include <ostream>
#include <sstream>
#include <string>
#include <tuple>
#include <type_traits>
#include <vector>
#include "absl/strings/str_cat.h"
#include "http2/http2_structures_test_util.h"
#include "http2/platform/api/http2_test_helpers.h"
#include "http2/test_tools/http2_random.h"
#include "common/platform/api/quiche_test.h"
using ::testing::AssertionResult;
using ::testing::AssertionSuccess;
using ::testing::Combine;
using ::testing::HasSubstr;
using ::testing::MatchesRegex;
using ::testing::Not;
using ::testing::Values;
using ::testing::ValuesIn;
namespace http2 {
namespace test {
namespace {
template <typename E>
E IncrementEnum(E e) {
using I = typename std::underlying_type<E>::type;
return static_cast<E>(1 + static_cast<I>(e));
}
template <class T>
AssertionResult VerifyRandomCalls() {
T t1;
// Initialize with a stable key, to avoid test flakiness.
Http2Random seq1(
"6d9a61ddf2bc1fc0b8245505a1f28e324559d8b5c9c3268f38b42b1af3287c47");
Randomize(&t1, &seq1);
T t2;
Http2Random seq2(seq1.Key());
Randomize(&t2, &seq2);
// The two Randomize calls should have made the same number of calls into
// the Http2Random implementations.
VERIFY_EQ(seq1.Rand64(), seq2.Rand64());
// And because Http2Random implementation is returning the same sequence, and
// Randomize should have been consistent in applying those results, the two
// Ts should have the same value.
VERIFY_EQ(t1, t2);
Randomize(&t2, &seq2);
VERIFY_NE(t1, t2);
Randomize(&t1, &seq1);
VERIFY_EQ(t1, t2);
VERIFY_EQ(seq1.Rand64(), seq2.Rand64());
return AssertionSuccess();
}
#if GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
std::vector<Http2FrameType> ValidFrameTypes() {
std::vector<Http2FrameType> valid_types{Http2FrameType::DATA};
while (valid_types.back() != Http2FrameType::ALTSVC) {
valid_types.push_back(IncrementEnum(valid_types.back()));
}
return valid_types;
}
#endif // GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
TEST(Http2FrameHeaderTest, Constructor) {
Http2Random random;
uint8_t frame_type = 0;
do {
// Only the payload length is QUICHE_DCHECK'd in the constructor, so we need
// to make sure it is a "uint24".
uint32_t payload_length = random.Rand32() & 0xffffff;
Http2FrameType type = static_cast<Http2FrameType>(frame_type);
uint8_t flags = random.Rand8();
uint32_t stream_id = random.Rand32();
Http2FrameHeader v(payload_length, type, flags, stream_id);
EXPECT_EQ(payload_length, v.payload_length);
EXPECT_EQ(type, v.type);
EXPECT_EQ(flags, v.flags);
EXPECT_EQ(stream_id, v.stream_id);
} while (frame_type++ == 255);
#if GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
EXPECT_DEBUG_DEATH(Http2FrameHeader(0x01000000, Http2FrameType::DATA, 0, 1),
"payload_length");
#endif // GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
}
TEST(Http2FrameHeaderTest, Eq) {
Http2Random random;
uint32_t payload_length = random.Rand32() & 0xffffff;
Http2FrameType type = static_cast<Http2FrameType>(random.Rand8());
uint8_t flags = random.Rand8();
uint32_t stream_id = random.Rand32();
Http2FrameHeader v(payload_length, type, flags, stream_id);
EXPECT_EQ(payload_length, v.payload_length);
EXPECT_EQ(type, v.type);
EXPECT_EQ(flags, v.flags);
EXPECT_EQ(stream_id, v.stream_id);
Http2FrameHeader u(0, type, ~flags, stream_id);
EXPECT_NE(u, v);
EXPECT_NE(v, u);
EXPECT_FALSE(u == v);
EXPECT_FALSE(v == u);
EXPECT_TRUE(u != v);
EXPECT_TRUE(v != u);
u = v;
EXPECT_EQ(u, v);
EXPECT_EQ(v, u);
EXPECT_TRUE(u == v);
EXPECT_TRUE(v == u);
EXPECT_FALSE(u != v);
EXPECT_FALSE(v != u);
EXPECT_TRUE(VerifyRandomCalls<Http2FrameHeader>());
}
#if GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
// The tests of the valid frame types include EXPECT_DEBUG_DEATH, which is
// quite slow, so using value parameterized tests in order to allow sharding.
class Http2FrameHeaderTypeAndFlagTest
: public QuicheTestWithParam<std::tuple<Http2FrameType, Http2FrameFlag>> {
protected:
Http2FrameHeaderTypeAndFlagTest()
: type_(std::get<0>(GetParam())), flags_(std::get<1>(GetParam())) {
HTTP2_LOG(INFO) << "Frame type: " << type_;
HTTP2_LOG(INFO) << "Frame flags: "
<< Http2FrameFlagsToString(type_, flags_);
}
const Http2FrameType type_;
const Http2FrameFlag flags_;
};
class IsEndStreamTest : public Http2FrameHeaderTypeAndFlagTest {};
INSTANTIATE_TEST_SUITE_P(IsEndStream,
IsEndStreamTest,
Combine(ValuesIn(ValidFrameTypes()),
Values(~Http2FrameFlag::END_STREAM, 0xff)));
TEST_P(IsEndStreamTest, IsEndStream) {
const bool is_set =
(flags_ & Http2FrameFlag::END_STREAM) == Http2FrameFlag::END_STREAM;
std::string flags_string;
Http2FrameHeader v(0, type_, flags_, 0);
switch (type_) {
case Http2FrameType::DATA:
case Http2FrameType::HEADERS:
EXPECT_EQ(is_set, v.IsEndStream()) << v;
flags_string = v.FlagsToString();
if (is_set) {
EXPECT_THAT(flags_string, MatchesRegex(".*\\|?END_STREAM\\|.*"));
} else {
EXPECT_THAT(flags_string, Not(HasSubstr("END_STREAM")));
}
v.RetainFlags(Http2FrameFlag::END_STREAM);
EXPECT_EQ(is_set, v.IsEndStream()) << v;
{
std::stringstream s;
s << v;
EXPECT_EQ(v.ToString(), s.str());
if (is_set) {
EXPECT_THAT(s.str(), HasSubstr("flags=END_STREAM,"));
} else {
EXPECT_THAT(s.str(), HasSubstr("flags=,"));
}
}
break;
default:
EXPECT_DEBUG_DEATH(v.IsEndStream(), "DATA.*HEADERS") << v;
}
}
class IsACKTest : public Http2FrameHeaderTypeAndFlagTest {};
INSTANTIATE_TEST_SUITE_P(IsAck,
IsACKTest,
Combine(ValuesIn(ValidFrameTypes()),
Values(~Http2FrameFlag::ACK, 0xff)));
TEST_P(IsACKTest, IsAck) {
const bool is_set = (flags_ & Http2FrameFlag::ACK) == Http2FrameFlag::ACK;
std::string flags_string;
Http2FrameHeader v(0, type_, flags_, 0);
switch (type_) {
case Http2FrameType::SETTINGS:
case Http2FrameType::PING:
EXPECT_EQ(is_set, v.IsAck()) << v;
flags_string = v.FlagsToString();
if (is_set) {
EXPECT_THAT(flags_string, MatchesRegex(".*\\|?ACK\\|.*"));
} else {
EXPECT_THAT(flags_string, Not(HasSubstr("ACK")));
}
v.RetainFlags(Http2FrameFlag::ACK);
EXPECT_EQ(is_set, v.IsAck()) << v;
{
std::stringstream s;
s << v;
EXPECT_EQ(v.ToString(), s.str());
if (is_set) {
EXPECT_THAT(s.str(), HasSubstr("flags=ACK,"));
} else {
EXPECT_THAT(s.str(), HasSubstr("flags=,"));
}
}
break;
default:
EXPECT_DEBUG_DEATH(v.IsAck(), "SETTINGS.*PING") << v;
}
}
class IsEndHeadersTest : public Http2FrameHeaderTypeAndFlagTest {};
INSTANTIATE_TEST_SUITE_P(IsEndHeaders,
IsEndHeadersTest,
Combine(ValuesIn(ValidFrameTypes()),
Values(~Http2FrameFlag::END_HEADERS, 0xff)));
TEST_P(IsEndHeadersTest, IsEndHeaders) {
const bool is_set =
(flags_ & Http2FrameFlag::END_HEADERS) == Http2FrameFlag::END_HEADERS;
std::string flags_string;
Http2FrameHeader v(0, type_, flags_, 0);
switch (type_) {
case Http2FrameType::HEADERS:
case Http2FrameType::PUSH_PROMISE:
case Http2FrameType::CONTINUATION:
EXPECT_EQ(is_set, v.IsEndHeaders()) << v;
flags_string = v.FlagsToString();
if (is_set) {
EXPECT_THAT(flags_string, MatchesRegex(".*\\|?END_HEADERS\\|.*"));
} else {
EXPECT_THAT(flags_string, Not(HasSubstr("END_HEADERS")));
}
v.RetainFlags(Http2FrameFlag::END_HEADERS);
EXPECT_EQ(is_set, v.IsEndHeaders()) << v;
{
std::stringstream s;
s << v;
EXPECT_EQ(v.ToString(), s.str());
if (is_set) {
EXPECT_THAT(s.str(), HasSubstr("flags=END_HEADERS,"));
} else {
EXPECT_THAT(s.str(), HasSubstr("flags=,"));
}
}
break;
default:
EXPECT_DEBUG_DEATH(v.IsEndHeaders(),
"HEADERS.*PUSH_PROMISE.*CONTINUATION")
<< v;
}
}
class IsPaddedTest : public Http2FrameHeaderTypeAndFlagTest {};
INSTANTIATE_TEST_SUITE_P(IsPadded,
IsPaddedTest,
Combine(ValuesIn(ValidFrameTypes()),
Values(~Http2FrameFlag::PADDED, 0xff)));
TEST_P(IsPaddedTest, IsPadded) {
const bool is_set =
(flags_ & Http2FrameFlag::PADDED) == Http2FrameFlag::PADDED;
std::string flags_string;
Http2FrameHeader v(0, type_, flags_, 0);
switch (type_) {
case Http2FrameType::DATA:
case Http2FrameType::HEADERS:
case Http2FrameType::PUSH_PROMISE:
EXPECT_EQ(is_set, v.IsPadded()) << v;
flags_string = v.FlagsToString();
if (is_set) {
EXPECT_THAT(flags_string, MatchesRegex(".*\\|?PADDED\\|.*"));
} else {
EXPECT_THAT(flags_string, Not(HasSubstr("PADDED")));
}
v.RetainFlags(Http2FrameFlag::PADDED);
EXPECT_EQ(is_set, v.IsPadded()) << v;
{
std::stringstream s;
s << v;
EXPECT_EQ(v.ToString(), s.str());
if (is_set) {
EXPECT_THAT(s.str(), HasSubstr("flags=PADDED,"));
} else {
EXPECT_THAT(s.str(), HasSubstr("flags=,"));
}
}
break;
default:
EXPECT_DEBUG_DEATH(v.IsPadded(), "DATA.*HEADERS.*PUSH_PROMISE") << v;
}
}
class HasPriorityTest : public Http2FrameHeaderTypeAndFlagTest {};
INSTANTIATE_TEST_SUITE_P(HasPriority,
HasPriorityTest,
Combine(ValuesIn(ValidFrameTypes()),
Values(~Http2FrameFlag::PRIORITY, 0xff)));
TEST_P(HasPriorityTest, HasPriority) {
const bool is_set =
(flags_ & Http2FrameFlag::PRIORITY) == Http2FrameFlag::PRIORITY;
std::string flags_string;
Http2FrameHeader v(0, type_, flags_, 0);
switch (type_) {
case Http2FrameType::HEADERS:
EXPECT_EQ(is_set, v.HasPriority()) << v;
flags_string = v.FlagsToString();
if (is_set) {
EXPECT_THAT(flags_string, MatchesRegex(".*\\|?PRIORITY\\|.*"));
} else {
EXPECT_THAT(flags_string, Not(HasSubstr("PRIORITY")));
}
v.RetainFlags(Http2FrameFlag::PRIORITY);
EXPECT_EQ(is_set, v.HasPriority()) << v;
{
std::stringstream s;
s << v;
EXPECT_EQ(v.ToString(), s.str());
if (is_set) {
EXPECT_THAT(s.str(), HasSubstr("flags=PRIORITY,"));
} else {
EXPECT_THAT(s.str(), HasSubstr("flags=,"));
}
}
break;
default:
EXPECT_DEBUG_DEATH(v.HasPriority(), "HEADERS") << v;
}
}
TEST(Http2PriorityFieldsTest, Constructor) {
Http2Random random;
uint32_t stream_dependency = random.Rand32() & StreamIdMask();
uint32_t weight = 1 + random.Rand8();
bool is_exclusive = random.OneIn(2);
Http2PriorityFields v(stream_dependency, weight, is_exclusive);
EXPECT_EQ(stream_dependency, v.stream_dependency);
EXPECT_EQ(weight, v.weight);
EXPECT_EQ(is_exclusive, v.is_exclusive);
// The high-bit must not be set on the stream id.
EXPECT_DEBUG_DEATH(
Http2PriorityFields(stream_dependency | 0x80000000, weight, is_exclusive),
"31-bit");
// The weight must be in the range 1-256.
EXPECT_DEBUG_DEATH(Http2PriorityFields(stream_dependency, 0, is_exclusive),
"too small");
EXPECT_DEBUG_DEATH(
Http2PriorityFields(stream_dependency, weight + 256, is_exclusive),
"too large");
EXPECT_TRUE(VerifyRandomCalls<Http2PriorityFields>());
}
#endif // GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
TEST(Http2RstStreamFieldsTest, IsSupported) {
Http2RstStreamFields v{Http2ErrorCode::HTTP2_NO_ERROR};
EXPECT_TRUE(v.IsSupportedErrorCode()) << v;
Http2RstStreamFields u{static_cast<Http2ErrorCode>(~0)};
EXPECT_FALSE(u.IsSupportedErrorCode()) << v;
EXPECT_TRUE(VerifyRandomCalls<Http2RstStreamFields>());
}
TEST(Http2SettingFieldsTest, Misc) {
Http2Random random;
Http2SettingsParameter parameter =
static_cast<Http2SettingsParameter>(random.Rand16());
uint32_t value = random.Rand32();
Http2SettingFields v(parameter, value);
EXPECT_EQ(v, v);
EXPECT_EQ(parameter, v.parameter);
EXPECT_EQ(value, v.value);
if (static_cast<uint16_t>(parameter) < 7) {
EXPECT_TRUE(v.IsSupportedParameter()) << v;
} else {
EXPECT_FALSE(v.IsSupportedParameter()) << v;
}
Http2SettingFields u(parameter, ~value);
EXPECT_NE(v, u);
EXPECT_EQ(v.parameter, u.parameter);
EXPECT_NE(v.value, u.value);
Http2SettingFields w(IncrementEnum(parameter), value);
EXPECT_NE(v, w);
EXPECT_NE(v.parameter, w.parameter);
EXPECT_EQ(v.value, w.value);
Http2SettingFields x(Http2SettingsParameter::MAX_FRAME_SIZE, 123);
std::stringstream s;
s << x;
EXPECT_EQ("parameter=MAX_FRAME_SIZE, value=123", s.str());
EXPECT_TRUE(VerifyRandomCalls<Http2SettingFields>());
}
TEST(Http2PushPromiseTest, Misc) {
Http2Random random;
uint32_t promised_stream_id = random.Rand32() & StreamIdMask();
Http2PushPromiseFields v{promised_stream_id};
EXPECT_EQ(promised_stream_id, v.promised_stream_id);
EXPECT_EQ(v, v);
std::stringstream s;
s << v;
EXPECT_EQ(absl::StrCat("promised_stream_id=", promised_stream_id), s.str());
// High-bit is reserved, but not used, so we can set it.
promised_stream_id |= 0x80000000;
Http2PushPromiseFields w{promised_stream_id};
EXPECT_EQ(w, w);
EXPECT_NE(v, w);
v.promised_stream_id = promised_stream_id;
EXPECT_EQ(v, w);
EXPECT_TRUE(VerifyRandomCalls<Http2PushPromiseFields>());
}
TEST(Http2PingFieldsTest, Misc) {
Http2PingFields v{{'8', ' ', 'b', 'y', 't', 'e', 's', '\0'}};
std::stringstream s;
s << v;
EXPECT_EQ("opaque_bytes=0x3820627974657300", s.str());
EXPECT_TRUE(VerifyRandomCalls<Http2PingFields>());
}
TEST(Http2GoAwayFieldsTest, Misc) {
Http2Random random;
uint32_t last_stream_id = random.Rand32() & StreamIdMask();
Http2ErrorCode error_code = static_cast<Http2ErrorCode>(random.Rand32());
Http2GoAwayFields v(last_stream_id, error_code);
EXPECT_EQ(v, v);
EXPECT_EQ(last_stream_id, v.last_stream_id);
EXPECT_EQ(error_code, v.error_code);
if (static_cast<uint32_t>(error_code) < 14) {
EXPECT_TRUE(v.IsSupportedErrorCode()) << v;
} else {
EXPECT_FALSE(v.IsSupportedErrorCode()) << v;
}
Http2GoAwayFields u(~last_stream_id, error_code);
EXPECT_NE(v, u);
EXPECT_NE(v.last_stream_id, u.last_stream_id);
EXPECT_EQ(v.error_code, u.error_code);
EXPECT_TRUE(VerifyRandomCalls<Http2GoAwayFields>());
}
TEST(Http2WindowUpdateTest, Misc) {
Http2Random random;
uint32_t window_size_increment = random.Rand32() & UInt31Mask();
Http2WindowUpdateFields v{window_size_increment};
EXPECT_EQ(window_size_increment, v.window_size_increment);
EXPECT_EQ(v, v);
std::stringstream s;
s << v;
EXPECT_EQ(absl::StrCat("window_size_increment=", window_size_increment),
s.str());
// High-bit is reserved, but not used, so we can set it.
window_size_increment |= 0x80000000;
Http2WindowUpdateFields w{window_size_increment};
EXPECT_EQ(w, w);
EXPECT_NE(v, w);
v.window_size_increment = window_size_increment;
EXPECT_EQ(v, w);
EXPECT_TRUE(VerifyRandomCalls<Http2WindowUpdateFields>());
}
TEST(Http2AltSvcTest, Misc) {
Http2Random random;
uint16_t origin_length = random.Rand16();
Http2AltSvcFields v{origin_length};
EXPECT_EQ(origin_length, v.origin_length);
EXPECT_EQ(v, v);
std::stringstream s;
s << v;
EXPECT_EQ(absl::StrCat("origin_length=", origin_length), s.str());
Http2AltSvcFields w{++origin_length};
EXPECT_EQ(w, w);
EXPECT_NE(v, w);
v.origin_length = w.origin_length;
EXPECT_EQ(v, w);
EXPECT_TRUE(VerifyRandomCalls<Http2AltSvcFields>());
}
TEST(Http2PriorityUpdateFieldsTest, Eq) {
Http2PriorityUpdateFields u(/* prioritized_stream_id = */ 1);
Http2PriorityUpdateFields v(/* prioritized_stream_id = */ 3);
EXPECT_NE(u, v);
EXPECT_FALSE(u == v);
EXPECT_TRUE(u != v);
u = v;
EXPECT_EQ(u, v);
EXPECT_TRUE(u == v);
EXPECT_FALSE(u != v);
}
TEST(Http2PriorityUpdateFieldsTest, Misc) {
Http2PriorityUpdateFields u(/* prioritized_stream_id = */ 1);
EXPECT_EQ("prioritized_stream_id=1", u.ToString());
EXPECT_TRUE(VerifyRandomCalls<Http2PriorityUpdateFields>());
}
} // namespace
} // namespace test
} // namespace http2